Plastic particle granulator with multi-stage screening function

Abstract

The utility model relates to the technical field of pelletizers, in particular to a plastic particle pelletizer with a multi-stage screening function, which comprises a pelletizer main body and an inclined blanking pipe arranged at the discharge end of the pelletizer main body, and a screening cylinder is arranged on one side of the pelletizer main body. A vertical pipe used for feeding towards the interior of the screening barrel is fixedly installed at the bottom end of the inclined discharging pipe, a plurality of mesh screen plates are fixedly installed on the inner walls of the left side and the right side of the screening barrel in sequence from top to bottom, and an inclined discharging plate is arranged at the bottoms of the mesh screen plates. An end plugging plate is fixedly installed between an end plate body of the inclined discharging plate and an end plate body of the mesh sieve plate, a plurality of discharging pipes which communicate with the inclined discharging plate and are used for discharging screened particles are fixedly installed on a barrel body of the screening barrel, and a discharging gap used for rolling of particle materials is formed above the mesh sieve plate. A vibration motor used for generating vibration is further arranged on the screening barrel. According to the utility model, multi-stage screening operation is facilitated, and the production efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of granulator technology, and more specifically, to a plastic granulator with multi-stage screening. Background Technology

[0002] In the plastics processing industry, the production quality and efficiency of plastic pellets have always been the focus of enterprises. As a key piece of equipment in plastics processing, the performance of plastic pellet mills directly affects the quality of plastic pellets and the production efficiency of enterprises. The plastic pellet mill transports raw materials to the pelletizing part, where they are extruded into pellets by the extrusion of the pelletizing mechanism. The pellets are then cooled to complete the preparation of plastic pellets.

[0003] The invention patent with authorization announcement number CN114919092B discloses a granulator for producing plastic granules, including a mounting block. A rotating motor is fixedly connected to one side of the top of the mounting block. The output end of the rotating motor is fixedly connected to a threaded sleeve through a reducer. A granulation box is fixedly connected to one side of the top of the mounting block. An extrusion barrel is set inside the granulation box, and several extrusion holes are set on the extrusion barrel. When the raw material is extruded through the extrusion holes, the rotation of the rotating ring drives the rotation of the cutting blade, thereby completing the granulation. This structure is relatively simple and has a fast production speed. At the same time, a compression spring and a connecting sleeve are installed inside the hollow screw, and a second top plate is installed on the connecting sleeve. This allows the second top plate to contact one side of the inner wall of the extrusion barrel, so that all the raw material can be extruded, preventing some raw material from remaining inside the extrusion barrel, which would not only waste the raw material but also be difficult to clean after long-term use.

[0004] While this technical solution enables complete extrusion of raw materials, avoiding waste, most current pelletizing machines primarily focus on the pelletizing process. However, the resulting plastic pellets may exhibit uneven size and shape, leading to irregularities in shape and size. Consequently, most plastic pelletizing machines lack multi-stage screening components, hindering the achievement of uniform pellet consistency. Furthermore, transferring pellets to a screening device after pelletizing is cumbersome, prone to contamination, and inconvenient for users. Therefore, we propose a plastic pelletizing machine with multi-stage screening capabilities. Utility Model Content

[0005] The purpose of this invention is to provide a plastic pelletizing machine with multi-stage screening to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A plastic granulator with multi-stage screening includes a granulator body and an inclined feeding pipe disposed at the discharge end of the granulator body. A screening cylinder for multi-stage screening is disposed on one side of the granulator body. A vertical pipe for feeding material into the screening cylinder is fixedly installed at the bottom end of the inclined feeding pipe. Multiple perforated screen plates are fixedly installed from top to bottom on the inner walls of the left and right sides of the screening cylinder. An inclined feeding plate is disposed at the bottom of the perforated screen plate. An end sealing plate is fixedly installed between the end plate of the inclined feeding plate and the end plate of the perforated screen plate. Multiple discharge pipes connected to the inclined feeding plate and used for discharging the screened granules are fixedly installed on the cylinder body of the screening cylinder. A feeding gap for rolling of granular material is disposed above the perforated screen plate. A vibration motor for generating vibration is also disposed on the screening cylinder.

[0008] Preferably, a feed pipe is fixedly installed on the top of the screening cylinder, a feed hopper is fixedly installed on the top of the feed pipe, and the vertical pipe is inserted into the feed hopper and located above the feed pipe.

[0009] Preferably, the diameter of the through holes in the multiple mesh screen plates increases sequentially from top to bottom, and the mesh screen plates are inclined downward at 15 degrees to 45 degrees.

[0010] Preferably, the inclined discharge plate and the upper perforated screen plate are symmetrical in the horizontal direction. The granular material screened by the perforated screen plate falls down to the inclined discharge plate and is discharged through the discharge pipe.

[0011] Preferably, a discharge hopper is fixedly installed at the bottom of the screening cylinder, and the feed pipe is located on the side close to the vertical wall of the screening cylinder;

[0012] This design allows plastic granules entering through the feed pipe to fall more effectively to the top of the uppermost mesh screen plate, and then roll down the uppermost mesh screen plate for screening.

[0013] Preferably, a plurality of vertically arranged cylindrical rods are fixedly installed on the top surface of the mesh screen plate. The cross-section of the cylindrical rods is circular, and the outer diameter of the cylindrical rods is smaller than the particle size of the plastic particles.

[0014] The cylindrical rod in this design slows down the rolling speed of the plastic particles, allowing them to be more thoroughly screened through the mesh screen.

[0015] Preferably, a plurality of fixed seats are fixedly installed on the bottom cylinder of the screening cylinder, the vibration motor is installed on the top surface of the corresponding fixed seat, a guide column is fixedly installed on the bottom of the fixed seat, a support seat is provided below the fixed seat, the guide column is located inside the support seat and is slidably connected to the support seat, and a spring is fixedly installed between the guide column and the bottom wall of the support seat.

[0016] Preferably, the screening cylinder is provided with a support assembly for preventing the screening cylinder from tipping over. The support assembly includes a support frame, and a limiting collar is fixedly installed at the top of the support frame. The limiting collar is sleeved on the top cylinder of the screening cylinder, and the screening cylinder and the limiting collar are slidably connected.

[0017] Preferably, a fixed base is fixedly installed at the bottom of the support seat, and a fixed plate is fixedly installed at the bottom of the support frame. Both the fixed base and the fixed plate are fixedly installed on the external base.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model achieves multi-stage screening of plastic particles by setting a screening cylinder and installing multi-stage mesh screen plates inside it, combined with an inclined feeding plate and discharge pipe. It can effectively screen out qualified particles of different sizes, ensuring the uniformity of plastic particles. At the same time, the cylindrical rod on the top surface of the mesh screen plate slows down the rolling speed of the particles, making the screening process more thorough and improving the screening accuracy.

[0020] 2. By directly setting the screening cylinder at the discharge end of the granulator body, the plastic granules can directly enter the screening cylinder for screening through the inclined discharge pipe and the vertical pipe, avoiding the cumbersome process of transferring the granules to the screening device after granulation, reducing the risk of granules being contaminated during transportation, simplifying the production process and improving production efficiency.

[0021] 3. This utility model, by setting a vibration structure consisting of a vibration motor, guide column and spring at the bottom of the screening cylinder, and a limiting collar in the support assembly, ensures the stable operation of the screening cylinder while using vibration to make the plastic particles move more smoothly on the mesh screen plate, further improving screening efficiency and ensuring the stability and reliability of equipment operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0024] Figure 3 This is the second partial structural schematic diagram of the present utility model;

[0025] The meanings of the labels in the diagram are as follows:

[0026] 1. Granulator body; 10. Inclined discharge pipe; 11. Vertical pipe;

[0027] 2. Screening cylinder; 20. Feed pipe; 21. Feed hopper; 22. Discharge hopper; 23. Mesh screen plate; 24. End sealing plate; 25. Inclined discharge plate; 26. Discharge pipe; 27. Cylindrical rod; 28. Discharge gap;

[0028] 3. Fixture; 30. Vibration motor; 31. Guide column;

[0029] 4. Support base; 40. Spring; 41. Fixed base;

[0030] 5. Support components; 50. Support frame; 51. Fixing plate; 52. Limiting collar. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Please see Figures 1-3This utility model provides a technical solution: a plastic granulator with multi-stage screening, including a granulator body 1 and an inclined discharge pipe 10 disposed at the discharge end of the granulator body 1. A screening cylinder 2 for multi-stage screening operation is disposed on one side of the granulator body 1. A vertical pipe 11 for feeding into the screening cylinder 2 is fixedly installed at the bottom end of the inclined discharge pipe 10. A feed pipe 20 is fixedly installed at the top of the screening cylinder 2. A feed hopper 21 is fixedly installed at the top end of the feed pipe 20. The vertical pipe 11 is inserted into the feed hopper 21 and located above the feed pipe 20 to achieve stable feeding operation. The insertion method ensures that the screening cylinder 2 will not directly collide with the vertical pipe 11 after displacement due to vibration.

[0034] like Figure 1 and Figure 2 As shown, multiple perforated screen plates 23 are fixedly installed from top to bottom on the inner walls of the left and right sides of the screening cylinder 2. An inclined discharge plate 25 is provided at the bottom of the perforated screen plate 23. An end sealing plate 24 is fixedly installed between the end plate of the inclined discharge plate 25 and the end plate of the perforated screen plate 23. Multiple discharge pipes 26 are fixedly installed on the cylinder body of the screening cylinder 2, connecting to the inclined discharge plate 25 and used for discharging the screened particles. A discharge gap 28 is provided above the perforated screen plate 23 for the rolling of the granular material. The material is screened by the perforated screen plate 23. The granular material falls down to the inclined feed plate 25 and is discharged through the discharge pipe 26. This ensures that during use, the plastic granules produced by the granulator body 1 enter the screening cylinder 2 through the inclined feed pipe 10 and the vertical pipe 11. They can then undergo multi-stage screening from top to bottom on the mesh screen plate 23. The granules pass through the corresponding mesh screen plate 23 according to their size, fall above the inclined feed plate 25, and are discharged through the discharge pipe 26 along the inclined feed plate 25. This achieves fine grading and screening of the plastic granules and ensures the uniformity of the granule size.

[0035] In this embodiment, the aperture of the through holes in the multiple mesh screen plates 23 increases sequentially from top to bottom. The mesh screen plates 23 are set at a downward inclination of 15 to 45 degrees, which conforms to the logic of particle screening. The inclination setting can cause the particles to slide down automatically under the action of gravity. At the same time, different apertures can screen the particles step by step, improving screening efficiency and accuracy. The inclined discharge plate 25 is symmetrical with the mesh screen plate 23 above in the horizontal direction, so that the screened plastic particles can be discharged more smoothly from the discharge pipe 26 along the inclined discharge plate 25. The end of the discharge pipe 26 can be connected to the corresponding collection device or container in the outside, which is conducive to subsequent collection operations.

[0036] Specifically, a discharge hopper 22 is fixedly installed at the bottom of the screening cylinder 2 for discharging the final large particles of raw material after screening. The feed pipe 20 is located on the side close to the vertical wall of the screening cylinder 2. After the plastic particles enter the screening cylinder 2, they can fall accurately to the top of the uppermost mesh screen plate 23 and roll along the screen plate to ensure that the screening operation is carried out in an orderly manner and reduce the chance of particles being missed during screening.

[0037] like Figure 1 As shown, multiple vertically arranged cylindrical rods 27 are fixedly installed on the top surface of the mesh screen plate 23. The cross-section of the cylindrical rods 27 is circular, and the outer diameter of the cylindrical rods 27 is smaller than the particle size of the plastic particles. This slows down the rolling speed of the plastic particles on the mesh screen plate 23, prolongs the contact time between the particles and the screen plate, and gives the particles a more sufficient chance to pass through the corresponding mesh, thereby improving the sufficiency and effectiveness of screening, while not hindering the flow of plastic particles.

[0038] In addition, a vibration motor 30 for generating vibration is provided on the screening cylinder 2. Multiple fixed seats 3 are fixedly installed on the bottom cylinder of the screening cylinder 2. The vibration motor 30 is installed on the top surface of the corresponding fixed seat 3. A guide column 31 is fixedly installed at the bottom of the fixed seat 3. A support seat 4 is provided below the fixed seat 3. The guide column 31 is located inside the support seat 4 and is slidably connected to the support seat 4. A spring 40 is fixedly installed between the guide column 31 and the bottom wall of the support seat 4. The vibration generated by the vibration motor 30 is transmitted to the screening cylinder 2 through the fixed seat 3, so that the particles vibrate and screen on the mesh screen plate 23, thereby improving the screening efficiency.

[0039] It is worth noting that the screening cylinder 2 is equipped with a support component 5 to prevent the screening cylinder 2 from tipping over. The support component 5 includes a support frame 50, and a limiting collar 52 is fixedly installed at the top of the support frame 50. The limiting collar 52 is sleeved on the top cylinder of the screening cylinder 2, and the screening cylinder 2 is slidably connected to the limiting collar 52. When the screening cylinder 2 is vibrating, it is prevented from tipping over, ensuring the safe and stable operation of the equipment and providing a guarantee for continuous and efficient screening.

[0040] It is worth noting that a fixed base 41 is fixedly installed at the bottom of the support base 4, and a fixed plate 51 is fixedly installed at the bottom of the support frame 50. Both the fixed base 41 and the fixed plate 51 are fixedly installed on the external base.

[0041] Finally, it should be noted that the granulator body 1 and the vibration motor 30 of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connection between each electrical component is completed in the order of operation. The detailed connection method is a technology known in the art.

[0042] When using the multi-stage screening plastic granulator of this utility model, the main body 1 of the granulator is started first to produce plastic granules. The formed plastic granules enter the screening cylinder 2 from the feed hopper 21 and feed pipe 20 at the top of the screening cylinder 2 through the inclined discharge pipe 10 and vertical pipe 11 at the discharge end of the main body 1 of the granulator.

[0043] After entering, the particles fall onto the uppermost mesh screen plate 23. Since the mesh screen plate 23 is inclined downwards, the particles roll along the screen plate under the action of gravity. Particles that meet the size of the screen plate aperture pass through the mesh and fall into the inclined discharge plate 25 below. They are then discharged from the corresponding discharge pipe 26 along the inclined discharge plate 25 and enter the external collection device. Particles that do not pass through continue to roll along the screen plate to the next level mesh screen plate 23 for further screening. The cylindrical rod 27 on the top surface of the mesh screen plate 23 will slow down the rolling speed of the particles to ensure thorough screening.

[0044] At the same time, the vibration motor 30 on the screening cylinder 2 is started, and the vibration is transmitted to the screening cylinder 2 through the fixed seat 3, causing the particles to vibrate on the screen plate, further improving the screening efficiency.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A plastic particle prilling machine with multi-stage screening, comprising a prilling machine body (1) and an inclined drop tube (10) arranged at the discharge end of the prilling machine body (1), characterized in that: A screening cylinder (2) for multi-stage screening is provided on one side of the granulator body (1). A vertical pipe (11) for feeding material into the screening cylinder (2) is fixedly installed at the bottom end of the inclined discharge pipe (10). Multiple mesh screen plates (23) are fixedly installed on the inner walls of the left and right sides of the screening cylinder (2) from top to bottom. An inclined discharge plate (25) is provided at the bottom of the mesh screen plate (23). An end sealing plate (24) is fixedly installed between the end plate of the inclined discharge plate (25) and the end plate of the mesh screen plate (23). Multiple discharge pipes (26) connected to the inclined discharge plate (25) and used for discharging sieved particles are fixedly installed on the cylinder body of the screening cylinder (2). A discharge gap (28) for rolling granular material is provided above the mesh screen plate (23). A vibration motor (30) for generating vibration is also provided on the screening cylinder (2).

2. The plastic pelletizer with multiple stage screening of claim 1, wherein: The top of the screening cylinder (2) is fixedly installed with a feed pipe (20), and the top of the feed pipe (20) is fixedly installed with a feed hopper (21). The vertical pipe (11) is inserted into the feed hopper (21) and located above the feed pipe (20).

3. The plastic pelletizer with multiple stage screening of claim 1, wherein: The diameter of the through holes in the multiple mesh screen plates (23) increases sequentially from top to bottom, and the mesh screen plates (23) are set at a downward inclination of 15 degrees to 45 degrees.

4. The plastic pelletizer with multiple stage screening of claim 1, wherein: The inclined discharge plate (25) and the mesh screen plate (23) above it are symmetrical in the horizontal direction. The granular material screened by the mesh screen plate (23) falls down to the inclined discharge plate (25) and is discharged through the discharge pipe (26).

5. The plastic pelletizer with multiple stage screening of claim 2, wherein: The bottom of the screening cylinder (2) is fixedly equipped with a discharge hopper (22), and the feed pipe (20) is located on the side close to the vertical cylinder wall of the screening cylinder (2).

6. The plastic pelletizer with multiple stage screening of claim 1, wherein: Multiple vertically arranged cylindrical rods (27) are fixedly installed on the top surface of the mesh screen plate (23). The cross-section of the cylindrical rods (27) is circular, and the outer diameter of the cylindrical rods (27) is smaller than the particle size of the plastic particles.

7. The plastic pelletizer with multiple stage screening of claim 1, wherein: Multiple fixed seats (3) are fixedly installed on the bottom cylinder of the screening cylinder (2). The vibration motor (30) is installed on the top surface of the corresponding fixed seat (3). A guide column (31) is fixedly installed at the bottom of the fixed seat (3). A support seat (4) is provided below the fixed seat (3). The guide column (31) is located inside the support seat (4) and is slidably connected to the support seat (4). A spring (40) is fixedly installed between the guide column (31) and the bottom wall of the support seat (4).

8. The plastic pelletizer with multiple stage screening of claim 7, wherein: The screening cylinder (2) is provided with a support assembly (5) for preventing the screening cylinder (2) from tipping over. The support assembly (5) includes a support frame (50). A limiting collar (52) is fixedly installed at the top of the support frame (50). The limiting collar (52) is sleeved on the top cylinder of the screening cylinder (2). The screening cylinder (2) and the limiting collar (52) are slidably connected.

9. The plastic pelletizer with multiple stage screening of claim 8, wherein: The bottom of the support seat (4) is fixedly installed with a fixed base (41), and the bottom of the support frame (50) is fixedly installed with a fixed plate (51); the fixed base (41) and the fixed plate (51) are both fixedly installed on an external base.

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